Comp specs:
Ram: 1 gig
CPU: Pentium 4 3.0ghz w/ HT
Graphics: Nvidia 6800 OC

and i set it so my main screen ran at 45 FPS constantly, while my oher 4 ran at 10 when not selected, the 4 had the graphics set to minimun, while my main screen was set to almost max. The other 4 lagged alittle bit,but not even close to the point were one would get stuck behind, and stop falowing.

my CPU only went up to about 50-60%, ram was at 1500m/2346m (somewere around there)
No. Either you have missed some info or you have some crazy pentium 4 from the future, just... No.

Now if you have a dual-core CPU then, maybe I could see it. But really, without a very nice cooling system your single core would be burning a hole in your mobo.

My AMD Athlon 64 X2 5400+ runs at 80% with 5 Wow's open while getting 15 FPS on the nonactive windows and all of my video settings are the same as yours, I even turned the sound off on the nonactive windows.